Diwali 2026 flights: the travel agent's tactical calendar for blocking seats before inventory runs out
By Kabir Malhotra (Kabir Malhotra writes about how Indian travel buyers actually pay — UPI vs credit card vs forex card surcharges, reward-point math on the top travel credit cards, RBI tokenisation, EMI-on-flights and the small fees that compound across a year of bookings.) · Published · 10 min read
Diwali 2026 falls in late October, and flights around that window — especially the long weekend before and after — start becoming genuinely hard to find at reasonable fares as early as August. For travel agents, the question is not 'when should I book Diwali flights' but 'when should I start blocking inventory, and how much deposit do I need upfront?' Here is the tactical calendar.
TL;DR — when to act
If you have clients travelling around Diwali 2026 (late October), the window to block seats at manageable rates is June–August 2026 — roughly 3 to 4 months before travel. IndiGo's group desk typically opens group quotations around this lead time; Air India's group and series-fare desk can sometimes be approached even earlier. By September, anything worth having on popular metro routes will either be gone or aggressively priced. The 3–4 month rule is not a myth — it consistently holds for Diwali, summer holidays and Christmas, based on how Indian airlines release their group inventory.
When do airlines actually release group inventory for Diwali?
Airlines manage Diwali inventory in two ways: revenue management holds back group-class seats until they are confident the flight will not sell out on retail fares, and the group desk separately negotiates block fares with agents who commit upfront.
IndiGo's group desk (accessible through IGDS — IndiGo's Group Desk System, or via your B2B portal's group request function) typically starts accepting quotation requests for October travel around June–July. The quotation is not guaranteed inventory — it is an offer valid for a short window (often 48–72 hours) during which you need to put down a per-seat deposit to firm up the block. Deposits are typically in the range of ₹1,500–₹3,000 per passenger per sector, but this varies by route and demand — get the exact figure from IndiGo's group desk at the time you request the quotation.
Air India's group fare process is slightly more structured: they have a dedicated group team reachable via ARIA (Air India's Reservation and Inventory Automation system, accessible to BSP-registered agents) and via email. Air India sometimes offers series fares for agents booking recurring blocks on a route — for example, a Delhi–Kochi block covering multiple dates in the Diwali window. If you have volume, it is worth asking the Air India group desk about series fare pricing rather than one-off group quotations.
Akasa Air has been growing fast and their group desk is operationally leaner — expect a more straightforward quotation process but less flexibility on terms. SpiceJet's group operations have been constrained in 2026 by their financial situation, so verify current availability before relying on them for peak-season blocks.
The 3–4 month rule: why it works and when it breaks down
The 3–4 month lead time for blocking Diwali seats works because of a structural tension in airline revenue management: too early, and the airline has not yet set its dynamic pricing for that date, so group fares may not be significantly better than retail; too late, and the group class inventory has already been absorbed by retail demand or other agents. The 3–4 month window catches the sweet spot — the airline is happy to lock in volume at a fixed fare, and retail hasn't started panic-buying yet.
The rule breaks down in two situations. First, if Diwali falls on an unusually short holiday window — a situation where office-goers only get 2–3 days of leave rather than a long stretch — demand concentrates on fewer flights and inventory tightens faster, pushing the sweet spot earlier to 5+ months out. Second, if you are booking the Delhi–Mumbai or Bengaluru–Mumbai trunk routes, which are always in demand and where airlines know they can sell every seat at retail price — on these, group fare advantage may be minimal and the airline might not offer meaningful group discounts at all.
Routes where group blocks make the most sense for Diwali: metro-to-hometown routes (Delhi–Lucknow, Mumbai–Patna, Bengaluru–Kolkata, Chennai–Coimbatore) where demand spikes sharply for the holiday but the rest of the year is moderate. Airlines are more willing to block here because they need the certainty.
Deposit recycling: how to collect client money before you need to pay the airline
Here is the mechanics that agents often don't talk about openly: you put down a deposit to the airline to firm the group block, then you collect individual deposits from clients over the following weeks. If you manage the timeline right, client deposits cover the airline deposit before it is due, and the remaining balance before the ticketing deadline.
The typical structure looks something like this: airline group deposit due within 48–72 hours of quotation; full ticketing required anywhere from 30 to 60 days before departure (varies by airline and route — always confirm with the group desk). That gives you a window of roughly 6–8 weeks (June-to-August if travel is late October) to collect from clients once the block is firmed up.
The risk: if a client drops out after the ticketing deadline, the airline's cancellation terms apply — group fares are often non-refundable or carry heavy penalties after ticketing. Build your client collection timeline so that you are not ticketing ahead of when clients have confirmed in writing and paid in full. Getting a simple written confirmation by WhatsApp is better than nothing — it at least establishes the booking intent if there is a dispute later.
If you are using FlightGPT Partner, your agency wallet balance can be used to put down group deposits immediately from your float, then replenished as client payments come in. This is the cleanest way to manage the timing without exposing personal funds.
Which routes to prioritise for Diwali 2026 seat blocks
Not all routes need a group strategy — some are more urgent than others. A rough prioritisation based on historical Diwali demand patterns:
- High urgency (block by July): Delhi–Lucknow, Mumbai–Varanasi, Mumbai–Patna, Bengaluru–Bhubaneswar, Delhi–Amritsar, Chennai–Madurai. These routes have massive hometown-bound demand concentrated in a 3-4 day window and limited capacity — especially the UP/Bihar routes where IndiGo is often the only serious option.
- Medium urgency (block by August): Mumbai–Kolkata, Delhi–Kolkata, Bengaluru–Kolkata, Hyderabad–Chennai. High volume but more capacity — there's room, but rates jump sharply after September.
- Lower urgency (September is still workable): Metro-to-metro routes (Delhi–Mumbai, Mumbai–Bengaluru) where inventory is deep. Group discount advantage is lower here anyway.
- International (act now): If your clients are doing a Diwali trip abroad — Dubai, Singapore, Thailand — the October peak is a global holiday period and those routes fill up fast across all carriers. Start immediately.
Avoiding the deposit trap: what to put in your client agreements
The messiest scenario for any agent is collecting deposits from 15 clients, firming the block with the airline, and then having 4 or 5 clients back out after the ticketing deadline. You are left with non-refundable tickets in your name and a difficult conversation about who absorbs the loss.
A few things that prevent this: Collect a non-refundable deposit from clients that at minimum covers the airline's per-seat cancellation charge — if you know the airline penalty is roughly ₹3,500 per person post-ticketing, collect at least that much upfront before ticketing. Be explicit in your WhatsApp message or booking confirmation that the deposit is non-refundable once the ticket is issued. Use a simple written statement — even a WhatsApp voice note can be misinterpreted; a written message is cleaner. And keep 10–15% buffer in your block beyond confirmed clients, because you will usually fill the remaining seats from your general inquiry pipeline as Diwali gets closer and retail fares spike.
See also: WhatsApp CRM automation to collect deposits faster and which B2B portal gives the longest PNR hold window. And if your clients need help finding the best base fares before you negotiate the group rate, point them to FlightGPT for a reference price.
Frequently asked questions
When does IndiGo open its group desk for Diwali 2026 flights?
IndiGo's group desk typically starts accepting quotation requests for October travel around June–July, roughly 3–4 months before departure. Requests submitted earlier may be turned away or quoted at retail-equivalent rates. Check via IGDS (IndiGo Group Desk System) or through your B2B portal's group request function.
How much deposit does IndiGo typically require to firm a group block?
Deposit amounts vary by route, demand, and quotation terms, but are typically in the range of ₹1,500–₹3,000 per passenger per sector as of 2026. Get the exact figure from the quotation — do not assume the previous year's number holds.
What is the difference between a group fare and a series fare?
A group fare is a one-off block for a specific date and route, quoted per request. A series fare is a recurring block across multiple dates on the same route — useful for agents who repeatedly move passengers on the same corridor. Series fares usually require higher volume commitment but can offer better per-seat pricing. Air India's group desk offers series fares; IndiGo is more group-by-group.
What happens if clients drop out after the ticketing deadline on a Diwali group block?
Post-ticketing, group fares are typically non-refundable or carry heavy cancellation penalties — airlines set these terms in the group quotation. You are liable for the penalty on each cancelled seat. The standard protection is collecting a non-refundable deposit from clients upfront that at least covers the airline's penalty, and keeping a small buffer of unsold seats to resell.
Should I also block seats for the days just before and after Diwali, not just on the day itself?
Yes — the 2–3 days before and after the main holiday are often as constrained as the holiday itself, because travellers fly out early and return late to maximise their time. The outbound peak is typically 3–4 days before Diwali; the return peak is 1–2 days after. Blocking both sides (or just the outbound if that is your client pattern) is the standard approach.